Automatic governing device for motors



(No Model.) 2 Sheets-Sheet 1.

B. F. MERRITT & J. M. JOY. AUTOMATIC GOVBRNING DEVICE TOR MOTORS.

No. 558,507. Patented A1121, 1896.

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(NovMod'el.) '2 Smets-sheet 2.

B. P. MERRITT su J.v M. JOY. AUTOMATIC GOVERNNG DEVICE POR MOTORS.

Patented Apr. 2l, 1896.

Inventors.

/57 Cf m Attorney( iUNiTED STATES PATENT OFFICE.

BENJAMIN F. MERRITT, OF NEVARK, NEV JERSEY, AND JOHN M. JOY, OF NEV YORK, N. Y., ASSIGNORS TO THE CONSOLIDATED TELEGRAPIT AND NEXYS COMPANY, OF NEV YORK.

AUTOMATIC GOVERNING DEVICE FOR MOTORS.

SPECIFICATION forming part of Letters Patent No. 558,507, dated April 21, 1896.

Application filed June 29,1895. Serial No. 554,476. (No model.)

To all whom t 11mg/ concern: other, and two smaller uprights Z) and Z1', also Beit known that we, BENJAMIN F. MERRITT, arranged opposite each other on the right, all of Newark, in the county of Essex, in the State of said uprights being mounted on a base A@ of New Jersey, and JOHN M. JOY, of the city of B is the shaft to be driven, and is shown 5 New York, in the county of New York, and in broken away in the drawings. The said shaft 55 the State of New York, have invented new may be connected directly or through any and useful Improvements in Automatic Govsuitable gearing with the mechanism or incrningDevices for Motors, of which the followstrument to be driven, which, for the sake of ing, takenin connection with the accompanysimplicity and brevity, is not shown. The 1o ing drawings, is a full, clear, and exact deshaft B is supported by bearings in the up- 6o scription. rights a and a. Our invention relates to automatically-gov- B is another shaft supported by bearings erning devices for electric motors; and the in the same uprights. This shaft extends object is to provide means by which an elecparallel to the other shaft and lies in the same 15 tric motor may be automatically started and horizontal plane. lf desired, this shaft may 65 stopped by the depression and release of a also be connected through gearing or directly key at a distance from the motor. with the mechanism to be driven. The rota- Our invention may be applied to printingtion of the shafts is governed by means contelegraph instruments, winding mechanism sisting of an escape-wheel C, the escape 2o of clocks, and any other analogous devices wheel being governed by the armature C, 7o adapted to be operated intermittently and which carries at its upper and free end the from a distance. Several motors and their pallets c c to engage the teeth on the wheel. governing devices connected in the same cir- The armature may be pivoted, as usual, but cuit may be controlled by a single key, or is preferably mounted on the upper end of a several keys may be employed at a station or spring D, rigidly secured at its lower end to 75 several stations, as desired. the frame A. Then in its normal position, Our invention consists in the combination, the spring extends in a vertical position, its with an electric motor, gearing and shaft to center or neutral line being on a plane eX- be driven, of a screw or worm on one of the tending through the axis of the escape-wheel 3o shafts of the gearing, a lever having a point shaft. 30 adapted to engage the screw, a circuit maker The motion to rotate the shafts B and B is and breaker in the path of the lever and conpreferably imparted, as shown, through fricnected to the terminals of the motor-circuit, tion-couplings, by the gear-wheels E and E, a flexible coupling between the gearing and which are in mesh with each other and form the shaft to be driven, means to stop the said part of the train of gearing connected to the 8 5 shaft operated by an electromagnet, an elecelectric motor M. Between each of the said tric circuit, including a circuit maker and gear-wheels and circular plates e, on their rebreaker, and means to separate the point spective shafts, is placed a disk d of iiexible from the screw; and our invention consists friction-giving material, as cloth, and be- 40 in certain other combinations of parts heretween the plate e and a similar plate e is a 9o inafter described, and specically set forth in dat coil-spring f, similar to a clock-spring, of the claims. sufficient power to start the rotation of the Referring to the drawings, Figure l is a top shaft while its gear-wheel and its attendant plan view of the devices. Fig. 2 is an end friction device are at rest and to continue its 45 view. Fig. 3 is a sectional view online a; o; movement until the motor has started and 95 of Fig. Li, and Fig. 4f is the front side elevagainedacertain amount of speed. The spring tion of the apparatus. j' is fast to e at its outer end and to e at its Referring specifically to the drawings, Ais inner end in a manner well known and no t the frame, having four uprights, two main necessary to be described. The plate or disk 5o uprights a and a, arranged opposite each e is securely pinned to the shaft. The spiral roo spring F, with its controlling tension-nuts f', acts to press the gear-wheel against its friction-disk d, and thus to give motion to the parts e and e.

The power-driven gear-wh eels E and E are carried loosely on their shafts and actuate, through the friction-disks d d, the parts e e, also carried loosely on the shafts. The parts ee give motion in turn to the plates e' e through the coil-springs ff. The plates e e being secured rigidly to their respective shafts, they are rotated together.

The rotary motion of the shaft B is governed by the engagement of the flier g with the stop-pin g, carried on the end of an arm G, supported and rocked by shaft G', the shaft being oscillated by the electromagnet H, connected in the main line X.

The motion of the flier g and shaft G with its attendant arm and stop-pin and the magnet is similar in some respects to the operation of such parts in printing-telegraph receivers. The controlling-magnets l of the escapement c c and the magnet H may be connected in series or multiple in the main line. The main line is connected to a source of alternating currents X', suitably located.

We do not wish to be limited to the form of the electric circuits and sources of current indicated in the drawings for energizing the magnets in our apparatus, as it will be obvious that these may be altered or changed in various ways without departing from our invention.

The magnet H is suspended by its yoke on an arm Il, which is rigidly secured to the shaft G, and the armature H is stationary on the frame A. XV hen at rest or in its normal position, the flier g and pin g are in engagement with each other as shown in Fig. 3. At the instant, however, an impulse is sent over the line by depressing the key Y the magnet ll is energized and attracted to its armature il, thus causing the shaft G' and its attendant arm and stop-pin to rotate and allow the flier g to revolve.

In this instrument an electric motor of any desirable type, deriving its current from any suitable source, is applied to the train of gearing hereinbefore mentioned. This motor is provided with an automatic cutting-out device, by which, when the transmitting-operator has released the key, the motor is stopped. This action is effected by the following means: The motor-pinion J engages the gear-wheel K, which in turn engages with the gear-Wheel E, mounted on the shaft l5. Vere there no attendant mechanism, both shafts B and B would revolve in opposite directions and proportionally. Upon the shaft carrying the gear-wheel K is mounted a worm T, with which a point t, carried on the end of a pivoted arm S, engages. The point t with the iinger t, when in a position at the right-hand end of travel in the worm, presses on a spring w and forces it away from the stationary spring t, opening the electric circuit Z between the points of contact z' on and between the inner sides of lthe springs, the said circuit being the driving-circuit of the motor M. The arm S is pivoted at its lower end in a block s on a shaft S to move in the plane of the aXis of the shaft, and this allows it to be moved universally. A spring g, connected to the said arm, returns its free end to its origi nal position to the left-hand end of the worm T when the point is released therefrom. The said point is released by rocking the shaft S on its bearings. The shaft S is rotated by the engagement of a pin n, mounted on one of the plates or disks e, which is rigidly connected to shaft B, with an arm a extending upward from the shaft S.

Itis obvious that upon rotating the shaft B after the machine has been stopped the shaft S will be oscillated by the arm n" to throw the point t out of engagement with the worm T, allowing the contact-points on the springs w and 'u to close the circuit Z and start the motor M. As before explained, the power for starting the apparatus is obtained from the coil-springs ff, the said springs being wound by the motor after the apparatus has been stopped, but before the motor has stopped.

Certain matters shown are not claimed herein, but are covered in another application filed June 29, 1805, Serial No. 554,475.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. The combination with an electric motor, a train of gearing and the shaft to be driven, of a worm mounted upon and secured to one of the shafts of the gearing, a lever having its free end universally movable, a point carried on its free end to engage the worm, a circuit maker and breaker in the path of the lever and connected to terminals of the motor-circuit, a spring connected to the lever, a shaft for the said lever, an arm secured to the shaft, a pin carried by a disk secured to one of the shafts to engage the arm, and means to start the rotation of the shaft, as set forth.

2. The combination with an electric motor, a train of gearing and the shaft to be driven, of a worm mounted upon and secured to one of the shafts of the gearing, a lever having its free end universally movable, a point carried on its free end to engage the worm, a circuit maker and breaker in the path of the lever and connected to terminals of the motor-circuit, a spring connected to the lever, a shaft for the said lever, an arm secured to the shaft, a pin carried by a disk secured to one of the shafts to engage the arm, a coil-spring between the shaft to be driven and the gearing, and means whereby the said shaft maybe released as set forth.

3. The combination with an electric motor, a train of gearing and the shaft to be driven, of a worm mounted upon and secured to one of the shafts of the gearing, a lever having its free end universally movable, a point carried IOO IIO

on itsl free end to engage the worm, a circuit maker and breaker in the path of the lever and connected to terminals of the motor-circuit, a spring connected to the lever, a shaft for the said lever, an arm secured to the shaft, a pin carried by a disk secured to one of the shafts to engage the arm, a coil-spring between the shaft to be driven and the gearing, an arm carried on said shaft, a lever carry ing a pin to engage the arm, and an electromagnet to operate the lever to release the shaft, as set forth.

4. The combination with an electric motor, a train of gearing and the shaft to be driven, of a worm mounted upon and secured to one of the shafts of the gearing, a lever having its free end universally movable, a point carried on its free end to engage the worm, a circuit maker and breaker in the path of the lever and connected to terminals of the motor-circuit, a spring connected to the lever, a shaft for the said lever, an arm secured to the shaft, a pin carried by a disk secured to one of the shafts to engage the arm, a ooilspring between the shaft to be driven and the gear- Wheel thereon, a friction-coupling for the shaft, an arm carried on said shaft, a lever carrying a pin to engage the arm, and an electromagnet to operate the lever to release the shaft, as set forth.

In testimony whereof we have hereunto signed our names.

BENJAMIN E. MEEEITT. [n s] JOHN M. JoY. LL. s.]

Titnessesz GEORGE L. HOFFMAN, HENRY IIERROLD. 

